Biology

Biology

1. Which of the following taxonomic categories includes all the other categories?

  1. order
  2. kingdom
  3. species
  4. family

Correct answer: (B)
kingdom

2. Muscles which regulate the diameter of pupil are

  1. Ectodermal striated
  2. Mesodermal striated
  3. Ectodermal unstriated
  4. Mesodermal unstriated

Correct answer: (C)
Ectodermal unstriated

3. Which of the following is not related to Rock weed

  1. It is a Rhodophyceae member
  2. It contains chl.a and chl.c
  3. Diplontic life cycle is present
  4. Two unequal lateral flagella are present

Correct answer: (A)
It is a Rhodophyceae member

4. The following are associated with nerve fibres in Peripheral Nervous System
A) Axolemma
B) Neurilemma
C) Endoneurium
D) Myelin sheath
E) Axoplasm
The correct sequence of the above from inside to outside w.r.to the nerve fibre is

  1. E,A,B,D,C
  2. E,A,D,C,B
  3. E,A,C,B,D
  4. E,A,D,B,C

Correct answer: (D)
E,A,D,B,C

5. How many sentences are correct related to Terror of Bengal
A) Vegetative propagation takes place through offset
B) It is free floating hydrophyte
C) Pulvinus petiole is present
D) It drains CO2 from the water

  1. All are correct
  2. Three are correct
  3. Two are correct
  4. one is correct

Correct answer: (C)
Two are correct

6. Identify the correct statements
A) Thyroxine can decrease rate of heart beat and cardiac output
B) Neural signals through the sympathetic nerves can increase rate of heart beat and cardiac output
C) Epinephrine and norepinephrine can increase rate of heart beat and cardiac output
D) Parasympathetic neural signals can increase rate of heart beat and cardiac output

  1. A,B
  2. B,C
  3. C,D
  4. A,D

Correct answer: (B)
B,C

7. Mismatch is

  1. Lycopsida − Selaginella
  2. Sphenopsida − Lycopodium
  3. Pteropsida − Adiantum
  4. Psilopsida− (psilotum)

Correct answer: (B)
Sphenopsida − Lycopodium

8. Choose the incorrect combinations from the following
A) R.C.Dagar − Polyblend
B) Kyoto protocol − Depletion of O3
C) Amrita Devi − Conservation of wildlife in urban areas
D) Burning of plastics − Polychlorinated biphenyls

  1. All the above
  2. A,B
  3. C,D
  4. A,B,C

Correct answer: (D)
A,B,C

9. Ascospores and Basidiospores produced in the following manner

  1. Endogenously, Endogenously
  2. Exogenously, Endogenously
  3. Endogenously, Exogenously
  4. Exogenously, Exogenously

Correct answer: (C)
Endogenously, Exogenously

10. Defects in ADH receptors or inability to secrete ADH cause

  1. Diabetes mellitus
  2. Diabetes insipidus
  3. Uremia
  4. Renal Calculi

Correct answer: (B)
Diabetes insipidus